Steve
Since you asked the below is a quick-and-dirty tutorial on my typical painting process.
For starters I typically paint in front of an open door at my workshop or outside in the driveway on a cloudy day when the sun and shadows are not an issue. I use an old outdoor swinging chair stand to hang parts from. This one was found on the roadside. I hang parts with bailing wire. A roll goes a long way and cuts easily with dykes and twists by hand or pliers.
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I set up a temporary workbench adjacent to the area I'm painting and try and get out all needed supplies before I spray anything.
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I have a plumbed air system with overhead line spool (forgot to get a picture of it) and a wall mounted regulator. I set the psi to 40-50 lb range. Too much pressure and all you do is make a paint cloud. Less is better, to a point.
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Some of the items I use are mixing cups, gloves, sprayer, respirator, primer, paint, filters, and a solvent to clean the gun afterwards (lacquer thinner is good for this). Whether I'm using a small detail sprayer or larger hvlp rig I need a stand to rest the gun for filling/refilling and to set down during the paint session. I have a nice stand for my hvlp gun, for this small detail gun a makeshift stand is all it takes.
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As for paint I am a fan of two part paints. Single pack paints take too long to dry and are often too thick to spray. In between coats you have to clean the gun. But with two part paints I can move from one coat right on to the next. That is a huge time saver and I don't have to wait overnight to put a second coat on. Pictured above is my old tried and true primer system, PPG 4 DP40LF/402LF. That stuff sticks like mad and wears like iron. Never had a single problem with it after many years of using it. For the topcoat I like BLP Mothane but will use whatever is needed get the job done. However, I don't spray any water-based paints.
The gun shown above is a old Campbell Hausfeld touch-up sprayer I bought over 20 years ago at Lowe's. I don't think they make it anymore but it wasn't that expensive, and sprays good enough for the jobs I do. If you were painting a car you'd go with a higher quality gun, but for for less critical applications the cheap box store guns are fine. Is it simple in that it only has two points of adjustment. The knurled knob on the back controls volume of paint coming out of the gun, and the smaller knob towards the front controls the air flow that changes the shape of the paint pattern (round to oval). That's it. The only thing that really ever gives me problems is spraying thicker paints and getting enough paint out of the gun. These guns won't push heavy body paints so you have to develop a feel for the viscosity and thin with whatever the paint label calls for. Two part paints are usually good right out of the can. It's single part paints that give me grief over this. I have several guns with larger reservoirs, including the hvlp ones with the reservoir on top. They all get the job done. Again, unless you are doing really high end automotive work these cheap guns are fine, imho.
With all that said the painting itself is really straightforward. I put just enough on to cover, to avoid drips, and then as it sets up put another coat on top. Below are a few pictures taken after the paint and primer are on. One thing I forgot to mention is I spend considerable time getting parts ready. That usually entails paint stripping via soak in boiling lye solution, wire wheeling, and media blasting, followed by taping off areas that I don't want to get paint on. When it comes down to it the prep work and cleanup is 90% or more of the effort. The actual painting is the easy part.
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